An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Chan CH, Wong HK, Yip PSF.Chan CH, et al.Int J Public Health. 2017 Jul;62(6):697-707. doi: 10.1007/s00038-017-0953-x. Epub 2017 Mar 14.Int J Public Health. 2017.PMID: 28293717
Guo Y, Chang SS, Chan CH, Chang Q, Hsu CY, Yip PSF.Guo Y, et al. Among authors: chan ch.J Epidemiol Community Health. 2020 Feb;74(2):120-129. doi: 10.1136/jech-2019-212977. Epub 2019 Nov 1.J Epidemiol Community Health. 2020.PMID: 31676667
Guo Y, Chan CH, Chang Q, Liu T, Yip PSF.Guo Y, et al. Among authors: chan ch.Health Place. 2019 Jul;58:102146. doi: 10.1016/j.healthplace.2019.102146. Epub 2019 Jun 6.Health Place. 2019.PMID: 31177067